Chapter 31, Problem 12TE

To determine

The steps require before precipitation.

Answer to Problem 12TE

The steps require before precipitation are first, warm air at elevation, second, expansion of air, and finally, temperature of air must decreases.

Explanation of Solution

There are generally three steps that are necessarily required for the precipitation of the air.

The very First step is warm or hot air is required at a particular height, means at higher altitude.

The second step is that there must be the expansion of the warm air as during the expansion process volume of the gas increases, and the temperature of the moist air decreases, and it starts to lose down its heat due to variation in the temperature.

The third step, when the temperature of the air decreases, finally below the dew point temperature of the air condensation of the moist air starts and precipitation form.

Conclusion:

Therefore, the steps require before precipitation are first, warm air at elevation, second, expansion of air, and finally, temperature of air must decreases.